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Electromagnetic cascades in the magnetosphere of a very young pulsar - A model for the positron production near the Galactic centerA detailed model for positron production by a young pulsar is presented. It is shown that electromagnetic cascades can develop in a young pulsar's magnetosphere, and the model results are applied to the pulsar which is hypothesized to lie near the Galactic center. It is found that such a pulsar would be expected to produce relatively low energy electron-positron pairs with an efficiency rating high enough to explain the observed luminosity of the Galactic center annihilation line. Virtually all of the gamma ray continuum radiation produced in the cascades would be beamed along the magnetic poles of the neutron star, and therefore probably would not be observed from earth. Some observational predictions generated by the proposed model for the Galactic center positron source are given.
Document ID
19870047684
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mastichiadis, Apostolos
(Boston Univ. Boston, MA, United States)
Brecher, Kenneth
(Boston Univ. Boston, MA, United States)
Marscher, Alan P.
(Boston University MA, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 314
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
87A34958
Funding Number(s)
CONTRACT_GRANT: NAG8-467
CONTRACT_GRANT: NSF AST-83-15556
Distribution Limits
Public
Copyright
Other

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